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T. B. MURRAY.

INDUCIION PASSAGES OF INTERNAL COMBUSTION ENGINES-1 APPLICATION FILED OCT. 31. mm.

1,318,224. Patented Oct. 7,1919.

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IIIIII/IIIIIlIIIIII/II/ .TJ'NITE THOMAS BLAGKWOOD MURRAY, OF SCOTST'OTIN, SCOTLAND.

INDUCTION-PASSAGES 0F INTERNAL-COMBUSTION ENGINES.

Application filed October 31, 1918.

To all whom it may concern Be it known that I, THOMAS BLAoKwoon ,MURRAY, a subject of the King of Great Britain and Ireland, and a resident of Scotstoun, in the county of Renfrew, Scotland, have invented certain new and useful Improvements in the Induction-Passages of Internal-Combustion Engines, and of which the following is the specification.

The invention relates to combustion engines having detachable cylinder heads, the cylinders being cast en bloc or in en bloc groups, and has for its object to provide an improved inlet manifold arrangement cast inte rally with the cylinder casting, and with the head of simple form and very adequately jacketed throughout.

According to the invention the inlet manifold of open-topped channel or other easily molded shape is formed along the top of the cylinder casting adjacent to-the cylinders substantially in a straight line and upon that side of the cylinders on which the inlet valves are. It is closed by the under side of the detachable head with which joint is made.

From this channel, simple passages debouch through the detachable head to each inlet valve. A passage (or passages) is also formed to the carbureter; this may either pass upward through the detachable head more or less downward through the cylinder body, or more or less horizontally therethrough to the side of the engine remote from the valves. This passage may be at the end of an en bloc group, or there may be a passage at each end, or when the engine is of four cylinders en bloc, it may be at the center of the block.

Alternatively, a passage or passages may extend to a carbureter located at the same side of the engine as the valves.

Specification of Letters Patent.

Patented Oct. 7, 1919.

Serial No. 260,528.

An illustrative example of the carrying out of the invention is shown in two accompanying sheets of explanatory drawings in which Figure 1, Sheet 1, is to the left hand side a plan and to the right hand side an inverted plan, and Fig. 2 a sectional end elevation of a four-cylinder engine made according to the invention.

In this example the inlet manifold A of open-topped channel section is formed along the top of the cylinder casting B and is closed by the under side of the detachable head C. It lies on the side where are the inlet valves D, is closely adjacent to them and communicates with them by passages E formed in the head. The channel like passage A communicates with the carbureter F by a transverse passage G formed in the cylinder casting.

WVhat I claim is 1. In a multi-cylinder combustion engine ing claim hereof, a channel-like passage means formed in the cylinder casting and closed by the head for admitting carbureted mixture to the manifold.

In testimony whereof I have signed my name to this specification.

THOMAS BLACKWOOD MURRAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

